Pretty sure it was Jericho. Think VeggiTales, and the song "Joshua Fought the Battle of Jericho."
The first investigators determined that the ship sank because of D) an outside mine
A primary source is made by someone who was there during the event. In this case, it’s the American Revolution. There isn’t a provided picture (well at least on my screen there isn’t) so I can’t give whatever the choices are, but some examples of a secondary source are:
textbooks, book reviews, reprints of maps/artworks, etc.